I did this 5 years or so ago with my niece and there is some walking. However, no where near a typical day in a park. While I'm not sure exactly what your concern with the walking may be, there are some rope bridges with wooden slats that you need to cross and these could pose some mobility problems. There were also some rougher paths to access the rope bridges that had tree roots and were uneven. Of course, this was many years ago when the Trek was first offered. If I recall correctly, we did spend some time riding in the back of 4x4 safari style jeeps for transportation so it wasn't completely on foot. Best wishes!